# data[].attributes.body
movement of objects away from each other.

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movement of objects toward each other to collide.

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where two crustal plates meet.

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evidence based movement of Earth's crust.

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reversal of the magnetic poles as retained in the sea floor.

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where oceanic plate goes below continental plate creating a trench.

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2 oceanic plates diverge, create a rift where new seafloor fills in.

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Wegener's hypothesis that the continents have drifted apart

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made of basalt, more dense than continental plates.

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made of granite, less dense than oceanic plates.

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differences in temperature causes density differences making liquid materials rise and fall.

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mass per volume unit.